I sincerely request a copy of the manual
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My company’s Xi’an Huaheng instruments require range adjustment, but the manual is not available, nor is there a handheld controller; no information can be found online either. I am hoping that someone can send me the manual for the differential pressure transmitter manufactured by Xi’an Huaheng, model number 3151DP5S22M4B3Da. I would be very grateful. My email address is: zhgqabcz1@sina.com
Generally, there are a zero-setting screw and a range adjustment knob on the back of the transmitter’s nameplate. If HART is not available, you can adjust the entire pressure gauge in parallel; pressure gauges are quite intuitive to use, so give it a try.
Luo Shang is right; we need to attach a pressure gauge ~But Hart is more useful
Reply to 2# lcg790825: It seems I’m asking for the instructions.:'
The factory you’re looking for isn’t very well-known, so it’s unlikely that you’ll be able to find instructions for it. Just call the manufacturer directly; that’s what we do when we lose the instructions!
I have quite a few instructions. There’s a label on the header of this gauge; when you open it, there are two buttons – one for setting the range and another for setting the zero point. If you don’t have a 357, you can use a pressure gauge to set the zero point, or you can connect an oscilloscope to measure the current. I’m not sure if my answer satisfies you; I’m in Xi’an
Isn’t it the most convenient to ask the manufacturer directly? Besides, products from other companies may not be suitable; they might have the same principle behind them
Another transmitter modeled after Rosemount